Which option does not correctly match chemical symbol and gas?
Answer and explanation
Correct answer: Carbon dioxide
The incorrect match is option D because Ar is the chemical symbol for argon, a noble gas, not carbon dioxide. Carbon dioxide is represented by CO₂, which contains one carbon atom and two oxygen atoms. O₂, N₂, and O₃ correctly represent oxygen, nitrogen, and ozone respectively. The governing concept is that chemical symbols identify elements, while molecular formulas show the elements and their numbers in a molecule.
Frequently asked questions
What is the correct answer to this question?
Carbon dioxide
Why is this the correct answer?
The incorrect match is option D because Ar is the chemical symbol for argon, a noble gas, not carbon dioxide. Carbon dioxide is represented by CO₂, which contains one carbon atom and two oxygen atoms. O₂, N₂, and O₃ correctly represent oxygen, nitrogen, and ozone respectively. The governing concept is that chemical symbols identify elements, while molecular formulas show the elements and their numbers in a molecule.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
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